A cyst or fatty deposit that forms in the eyelid tissue, similar to an atheroma found elsewhere in the body.
From Greek 'blepharon' (eyelid) + 'athero-' (porridge-like or pasty) + '-oma' (tumor or cyst). The 'athero-' prefix describes the thick, pasty consistency of the material inside, a term historically used to describe arterial plaque buildup.
These aren't just simple pimples — atheromas contain a distinctive pasty, cheese-like substance that can persist for years, and the term 'atheroma' is the same root used to describe dangerous buildup in arteries, showing how doctors reuse descriptive words across different body parts.
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